<template>
  <div class='icons'>
      <swiper :options="swiperOption">
        <swiper-slide v-for="(page, index) of pages" :key="index">
            <div class="icon" v-for="item of page" :key="item.id">
                <div class='icon-img'>
                    <img class='icon-imgcontent' :src="item.imgUrl"/>
                </div>
            <p class="icon-desc">{{item.desc}}</p>
            </div>
        </swiper-slide>
    </swiper>
  </div>
</template>

<script>
export default {
  name: 'HomeIcons',
  props: {
    list: Array
  },
  data () {
    return {
      swiperOption: {
        autoplay: false
      }
      // iconList: [{
      //   id: '0001',
      //   imgUrl: 'http://img1.qunarzz.com/piao/fusion/1611/54/ace00878a52d9702.png',
      //   desc: '景点门票'
      // }, {
      //   id: '0002',
      //   imgUrl: 'http://img1.qunarzz.com/piao/fusion/1711/df/86cbcfc533330d02.png',
      //   desc: '滑雪季'
      // }, {
      //   id: '0003',
      //   imgUrl: 'http://img1.qunarzz.com/piao/fusion/1710/a6/83f636bd75ae6302.png',
      //   desc: '泡温泉'
      // }, {
      //   id: '0004',
      //   imgUrl: 'http://img1.qunarzz.com/piao/fusion/1611/35/2640cab202c41b02.png',
      //   desc: '动植物园'
      // }, {
      //   id: '0005',
      //   imgUrl: 'http://img1.qunarzz.com/piao/fusion/1611/54/ace00878a52d9702.png',
      //   desc: '景点门票'
      // }, {
      //   id: '0006',
      //   imgUrl: 'http://img1.qunarzz.com/piao/fusion/1711/df/86cbcfc533330d02.png',
      //   desc: '滑雪季'
      // }, {
      //   id: '0007',
      //   imgUrl: 'http://img1.qunarzz.com/piao/fusion/1710/a6/83f636bd75ae6302.png',
      //   desc: '泡温泉'
      // }, {
      //   id: '0008',
      //   imgUrl: 'http://img1.qunarzz.com/piao/fusion/1611/35/2640cab202c41b02.png',
      //   desc: '动植物园'
      // }, {
      //   id: '0009',
      //   imgUrl: 'http://img1.qunarzz.com/piao/fusion/1611/a9/ffc620dbda9b9c02.png',
      //   desc: '一日游'
      // }]
    }
  },
  computed: {
    // 这里的算法是为了让一维数组iconList转换成二维数组，每个数组对应一页内容
    pages () {
      const pages = []
      this.list.forEach((item, index) => {
        const page = Math.floor(index / 8)
        if (!pages[page]) {
          pages[page] = []
        }
        pages[page].push(item)
      })
      return pages
    }
  }
}
</script>

<style lang="stylus" scoped>
@import '~styles/variables.styl'
@import '~styles/mixins.styl'
.icons >>> .swiper-container
    height:0
    padding-bottom:50%
.icons
    margin-top:0.1rem
    .icon
        position:relative
        overflow:hidden
        float:left
        width:25%
        height:0
        padding-bottom:25%
        // background:red
        .icon-img
            position:absolute
            top:0
            left:0
            right:0
            bottom 0.44rem
            // background:blue
            box-sizing:border-box
            padding 0.1rem
            .icon-imgcontent
                display :block
                margin :0 auto
                height:100%
        .icon-desc
            position:absolute
            bottom:0
            left:0
            right:0
            height 0.44rem
            line-height 0.44rem
            color:$darkTextColor
            text-align:center
            ellipsis()
</style>
